Objective To investigate the effect of histone deacetylase (HDAC) activity on connective tissue diseases (CTD) associated pulmonary fibrosis (PF) in mice. Methods A single tracheal administration of bleomycin induced PF in C57BL/6J male mice was performed to establish a PF model. The experimental mice were divided into three groups bleomycin group (group B, n = 16) which was given bleomycin A2 physiological saline solution 2.5 μl/g body weight, saline group (Group C, n = 16) which was given physiological saline solution 2.5 μl/g body weight and no operation group (group N, n = 16). At 7, 14 and 21 days after administration, the animals were randomly killed and their specimens were collected. The activity of HDAC2 and HDAC4 was detected by colorimetry. Hematoxylin-eosin staining was used to evaluate pulmonary alveolitis and Masson staining for pulmonary fibrosis. The variance, correlation and binary variable correlation were analyzed. Results The HDAC2 activity in lung tissue of mice in the bleomycin group wash pathological scores of alveolitis (r=0.428, P less then 0.01) and pulmonary fibrosis (r=0.508, P less then 0.01). HDAC4 activity in lung tissue of mice was positively correlated with the pathological scores of alveolitis (r=0.355, P less then 0.05) and pulmonary fibrosis (r=0.457, P less then 0.01). Binary linear regression analysis showed that HDAC2 activity had a stronger effect on the process of PF lesions than HDAC4 activity in lung tissue of mice. Conclusions When pulmonary fibrosis occurred in mice, the activities of HDAC2 and 4 in pulmonary fibrosis were significantly increased. The activity of HDAC2 increased rapidly and lastingly, and the activity of HDAC4 fluctuated significantly and increased briefly. Changes in HDAC2 activity have stronger effects on alveolitis and fibrosis than HDAC4.Objective To explore whether the use of pancreatic stent combined with somatostatin can produce the synergistic effect of preventing acute pancreatitis (AP) and hyperamylasemia (HP) after endoscopic retrograde cholangiopancreatography (ERCP). Methods From January 2019 to December 2019, the clinical data of 325 patients with ERCP were analyzed retrospectively in cholelithic center of Shanghai East Hospital Affiliated to Tongji University. According to the different methods of AP prevention, the patients were divided into the observation group (pancreatic stent and somatostatin) and the control group (pancreatic stent) and the incidence of AP and HP were compared. Results In the observation group, there were 5 cases of AP (3.65%) and 10 cases of HP (7.30%). In the control group, there were 7 cases of AP (3.72%) and 19 cases of HP (10.11%). The incidence of AP and HP in the observation group was lower than that in the control group, but the differences were not statistically significant (χ?=0.001, P=0.972; χ?=0.768, P=0.381). Conclusion The use of pancreatic stent combined with somatostatin will not produce the synergistic effect of preventing AP and HP after ERCP.Objectives To analyze the reasons of residual partial anomalous pulmonary venous connection (PAPVC) after previous cardiac surgery, and summarize the strategies and experience for diagnosis and treatment of secondary correction operation. Methods The clinical data of 18 patients who were admitted to Fuwai Hospital of Chinese Academy of Medical Sciences and Fuwai Yunnan Cardiovascular Hospital from June 2009 to May 2019 were retrospectively analyzed. All the patients underwent secondary cardiac surgery to treat PAPVC. The preoperative and intraoperative characteristics and postoperative complications of the patients were summarized and analyzed. Results Totally, there were 7 male and 11 female cases, aged 1-49 years (median age 4.5 years). In the first cardiac surgery, 3 patients were diagnosed with PAPVC, which existed after surgery. One patient was diagnosed with total anomalous pulmonary venous connection (TAPVC), but left PAPVC after surgery. The remaining 14 patients were all missed preoperative and intraoperative diagnosis. After the initial surgery, most patients had no significant symptoms (11/18), but PAPVC was found in 11 cases due to postoperative cardiac murmur or transthoracic echocardiography (TTE). In the secondary surgery, there were 4 cases of type A, 10 cases of type B, 2 cases of type C, no type D, and 2 cases of mixed type, respectively, according to Bordy classification. The diagnostic accuracy of TTE and CT angiography (CTA) was 50.0% and 92.9%, respectively. There was no death after the second surgery, but pulmonary vein occlusion, pericardial effusion, anastomotic stenosis and other complications occurred in 4 patients. Conclusions The main causes of missed diagnosis of PAPVC are the undefined cardiac structural deformities before operation and the lack of careful exploration during the operation. TTE is simple and feasible to diagnose PAPVC, and it can improve the diagnostic accuracy when combined with CTA.Objective To investigate the changes of spontaneous brain activity in patients with end-stage renal disease (ESRD) by combining three different resting state functional magnetic resonance low frequency amplitude algorithms, including amplitude of low-frequency fluctuations (ALFF), fractional amplitude of low-frequency fluctuations (fALFF), and percent amplitude of fluctuation (PerAF), and to analyze the associations between spontaneous brain activity changes and clinical variables. Methods The data of 31 ESRD patients treated with maintenance hemodialysis and 37 healthy volunteers in the Department of Nephrology and Renal Transplantation of the Affiliated Hospital of Qingdao University from August 2018 to December 2019 were retrospectively collected. https://www.selleckchem.com/products/pf-06700841.html The resting state functional magnetic resonance imaging (rs-fMRI) scan was performed to calculate the ALFF, fALFF, and PerAF values of the whole brain of the subjects in each group. Independent sample t test was used for comparison between groups, and Pearson corr gyrus (r=-0.509, P=0.003) and the left supramarginal gyrus (r=-0.405, P=0.024) were negatively correlated with serum potassium concentration in ESRD patients, while mALFF values of the bilateral anterior precuneus (r=0.058, P=0.004) and mPerAF values of the left gyrus (r=0.415, P=0.020) were positively correlated with hemoglobin level. Conclusions In ESRD patients, spontaneous brain activity was reduced in multiple brain regions, mainly located in default mode network(DMN), which might be the underlying pathophysiological mechanisms of their brain damage. Controlling serum potassium and hemoglobin levels was essential to prevent the progression of brain damage in ESRD patients.